<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { reactive,ref } from 'vue'
import { ElMessage } from 'element-plus'

//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)

//定义数据模型
const registerDate = ref({
    username:'',
    password:'',
    rePassword:''
})

//校验密码的函数,rule : 表示规则 | value : 表示值 | callback ：表示回调函数
const checkRePassword = (rule, value, callback) => {
    if(value == ''){
        callback(new Error('请再次确认密码'))
    }else if(value != registerDate.value.password){
        callback(new Error('请确报两次输入的密码一致'))
    }else{
        callback();
    }
}

//定义表单校验规则
const rules =  {
    username:[
        //required:true ：必须传 ,message:'请输入用户名' :提示信息 ,trigger:blur ：离焦的时候校验
        {required:true,message:'请输入用户名',trigger:blur},
        //min:5 :最小5字符 ,最大16字符
        {min:5,max:16,message:'长度为5~16位非空字符',trigger:blur}
    ],
    password:[
        //required:true ：必须传 ,message:'请输入用户名' :提示信息 ,trigger:blur ：离焦的时候校验
        {required:true,message:'请输入密码',trigger:blur},
        //min:5 :最小5字符 ,最大16字符
        {min:5,max:16,message:'长度为5~16位非空字符',trigger:blur}
    ],
    rePassword:[
        //自定义校验密码规则
        {validator:checkRePassword,trigger:blur}
    ]
}

//调用后台接口完成注册
import {userRegisterService,userLoginService} from '@/api/user.js'
const register = async () => {
    //registerData是一个响应式对象,如果要获取值,需要.value
    let result = await userRegisterService(registerDate.value)
    ElMessage.success(result.message? result.message:'注册成功')
}

//登入,复用注册的数据模型,复用注册表单数据校验
//引入store
import {useTokenStore} from '@/stores/token.js'
const tokenStore = useTokenStore()//使用useTokenStore函数
//引入路由
import {useRouter} from 'vue-router'
const router =  useRouter()
const login = async () => {
    //调用接口，完成登入
    let result = await userLoginService(registerDate.value)
    ElMessage.success(result.message? result.message:'注册成功')
    //把得到的token存储到pinia中
    tokenStore.setToken(result.data)

    //跳传首页，路由完成条船
   router.push('/')
}
 
 //清空登入切换注册的数据
 const clearRegisterData = () => {
    registerDate.value= {
        username:'',
        password:'',
        rePassword:''
    }
 }



</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 :model="registerDate":为了实现表单字段双向绑定,需要使用model属性. :rules : 表示自定校验规则 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerDate" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerDate.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerDate.password"></el-input>
                </el-form-item>
                <el-form-item prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerDate.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerDate" :rules="rules">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerDate.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerDate.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>